Pump.



umh"

C. L. PARKER.

PUMP. APPLIoATIoN FILED 001.214.1910.

4 SHEETS-SHEET 1.

Patented May 28, 1912.

c. LL PARKER.

PUMP. n APPLICATION FILED 00T. 14, 1910.

Patented May 28, 19112.v

4 BHEETS-SHEBT 2 Nil Las ZZ.

C. L. PARKER.

PUMP.

APPLICATION FILED 0013.14, 1910.

4lmselltaed May 28, 1912.

4 SHEETS-SHEET 3.

ATTORNEY ml .IJ mY G. L. PARKER.

PUMP. APPLICATION FILED 00T. 14, 1910. A'

- Patented May 28, 1912.

4 SHEETS-SHEET 4.

.` eine@ I CLARENCE L. PARKER, OF LOS ANGELES, CALIFORNIA.

PUMP.

Specification of Letters Patent.

Patented May 28,1912.

Application led October 14, 1910. Serial No. 587,056.

To all whom it may concern.

Be it known that I, CLARENCE L. PARKER, a citizenof the United States, residing at Los Angeles, in the county of Los Angeles "and State of California, have -invented a new and useful Punip, of which the following is a specification.

This invention relates to o-il well or other pumps, andY it has for its principal object to provide a pump in which the foot valve is mounted to rotate continuously during the operation of the pump so as to insure the proper seating ofthe valve and thus prevent leakage so that the pump is especially adapted for deep well operation.

Another object of the invention is the provision 0f a pump of this character which is of extremely simple and inexpensive construction, reliable and etlicient in use, and so designed -that the necessity of well pulling for inspection and repair of the parts is reduced to a minimum. i

Another object of the invention is the yemployment '0fa novel plunger construct-ion whereby a tight working t is provided be# ytween the plunger and barrel at all times,

since' the plunger is designed to compensate for Wear. j

An additional object is the employment of an' upwardly-closing working valve con-r -nected with the sucker rod or some part' rigidly attached thereto in connection with a plunger which is connected with the sucker rod through a lost motion connection, so i lthat the rod has a limited independent movement at the beginning of each istroke for opening and closing the Working `valve.

With these objects in view and others, as will appear as the description proceeds, the invention comprises the various novel features of construct-ion and arrangement of parts which will be more fully described hereinafter and vset forth with particularity in the claims appended hereto.

' In the. accompanying drawings, which illustrate one embodiment of the invention,

Figure 1 is a side view of the pump operat-l ing mechanism and the upperportion of thc pump casing and tubing invsection. Fig.

is an enlarged sectional view of the connection device between the sucker rod and walking beam of the operat-lng mechanism, together wlth the means for rotating lthe sucker rod' during the lreciprocation thereof. Fig. 3 is a modified form of connecting means between the sucker rod and walking tion on line 21-21, Fig. 20.

beam. Fig. 4 is a plan view of the cross head forming a part of the connecting means shown in Fig. 4. Fig. 5 is an enlarged sectional view-of the barrel of the pump showing the plunger and valves in elevation. Figs. 6 and 7 are longitudinal sectional views of the upper part of the plunger and working valve, and lower part of the plunger and foot valve, respectively. Fig. 8 is a transverse section on line 8 8, Fig. 6. Fig. 9 is a longitudinal sect-ion of a. modiiied` form of plunger. Fig. 10 is a perspective view of the device for connecting the standing valve Fig. 12. Fig. 14 isa top plan view of a guide ring for the plunger. v

longitudinal section 'of a further modified Fig. 15 is a form of plunger of the upwardly-closing working valve type. Fig. 16 is a transverse section on line 16-16, Fig. 15. Fig. 17 is a side view of the tubular link forming a portion of the connecting means between the foot valve and rotary sucker rod. Fig-18 is a longitudinal section of a plunger which is a modification ,of that shown in Fig. 15.

-Figflt) is a transverse section on line 19-19,

Fig.\18. Fig. 2O is a detail view showing' the manner of connecting adjacent sections of. the 'sucker'rod together. Fig. v21 is a sec- Similar reference characters are employed to designate corresponding parts throughout the views.

Referring to the drawings, 1 designates the pump platform or Hoor, from which rises .the Sampson post 2 on which is mounted the walking beam 3 that is connected by a pitmanf 4 vwith the crank 5 of the driving wheel 6, the latter being driven in the usual mannerby a belt transmission 7. AExtending through the floor 1 is the well casing 8 provided with the usual cap or head 9 through which passes the'tubing 10, there being a stutling box l11 for the tube through which 4passes the polished rod 12 that connects the sucker rod 13 with the walking beam. Since the foot valve of the pump is adapted ton pose, a connecting device designated generally by A, Figs. 1 and 2, is employed, the

same consisting of a section of pipe or tube 14 that has a cap 15 on its lower end in which the polished rod 12 is adjustably clamped by a set screw 16 on the collar, and the upper end of the tube 14 is cgnnected by a coupling 17 with an eye bolt 18 bperatlvely connected with a cross head`19 mounted on the'end of the walking bea-1n 3. The eye bolt, which forms a suspending rod, has its -lower end 20 threaded in the coup-ling 17 and its upper end formed with an eye 21 and a Shoulder 22 below the eye which bears on the ring 23 which sustains the eye bolt on the cross head. This ring forms a part of a bearing box that includes anti-friction devices 24 disposed between the ring 23 and boss 25 formed on the upper part of the cross head. Surrounding the eye bolt 18 is a spacing sleeve 26 that has its upper vend threaded in the bottom counterbored passes around a pulley 30 connected with the driving wheel 6, the belt being guided on idler pulleys 31 so arranged that the power is translnitted directly from the pulleyl 30 to the pulley 28, which latter has its axis of rotation at right angles to that of the pulley 30. By the construction thus far described, the rotation of the driving wheel 6 imparts a vertical reciprocatory movement to the sucker rod through the walking beam and its connectionwith the sucker rod and driving wheel, and at the same time the sucker rod is rotated through the belt and pulley transmission 28, 29 and 30, between the driving wheel Gand device A. The cross head 19 is'held in place on the walking beam by links 32 connected at 33 with the'walking beam to the ends of the cross head by bolts 34. By loosening the links 32 from the cross head -and removing the latter from the walking beam, the sucker rod and attached parts can be drawn out of the well in the usual manner.

In the modification shown in Fig. 3, the cross head 19 has a cup-shapedhub 35 in which the bearing box 36 is seated and one side of the hub is cut away. at 37 Fg. 4, to permit the eye:bolt or rod 18 to be disconnected from the head by a lateral movement, as when the well is to be pulled, and

lin this modified form, the driving pulley 28 is mounted on the eye rod 18 between'the head of the latter and bearing box 36.

Attached to the lower end of the tubing 1.() is the .pump barrel B, Fig. 5, which .is .preferably of the construction set forth 1n my copending application Serial No.l 587 ,055,

Iiiled October 14, 1910. The barrel comprises gn' outer casing 37 that has a contracted neck 38 at its upper end connected by a coupling 39 with the tubing 10, and the lower end of the casing 37 carries a shoe I The foot valve C is of the same construction in the various modifications of the pump andit comprises a hollowcylindrical body 44, best shown in Fig. 7, that carries at its upper end a seat 45 for the rotary valve 46. rl `he lower end of the body 44 is contracted and carries an inset packing ring 47 that wedges against the seat 48` of the shoe 40, as shown in Fig. 5. The valve seat is in the form of a ring threaded in the upper end yof the valve body 44, so as to for-m an internal shoulder 49. Thefvalve 46 is threaded on the lower end of a centrally disposed rod 50, the valve being clamped between a collar 5l on thel rod and a sleeve 52 screwed `on therod below'the'valve. Threaded ou the rod at a point below the sleeve is a guide 53 that moves back and forth in lthe valve body 44 to hold the valve 46 in central position, and the arms of this guide .are adapted to strike the shoulder 49 to limit the opening movement of the valve. The opening of the valve is assisted by a helical compression spring 54 housed in the body 44 with its upper end bearing against -the arms of the spider-shaped guide 53 and its lower end bearing on the shoulder 55 of the valve body 44. To insurethe retention of the parts on the rod 50, a jam nut 56 is screwed on the lower end of the rod'at a point under 'the guide 53. When the valve is seated, as shown in Fig. 7,- the spring 54 is compressed so as to be in readiness to force 'the valve open during -the vsuction stroke of the plunger. The ring 54 has a conical seat 57 ofsubstantial' area for engagement by the valve 46, and by the con- I tinuous rotation of the latter, the seat and valve are kept in perfect fitting relation, both wearing together so that leakage is prevented. By arranging the foot valve in thus manner, the use of a cage i's avoided,

and, as the result, the passage of the oil is not obstructed, and furthermore, there is no danger of the valve being clogged with sand.

Referring to Figs. 5 tol 8, inclusive, it will be observed that the plunger vD-is a hollow ,tubular structure disposed above the foot valve and mounted for combined reciprocatory and rotary movement in the barrel.

It has at itslower end a spider-like guide 58 l I that has its upper portion 59 screwed 'into the plunger., and inthe ub 60 is a plug 61 l `body of the plunger and is threaded in the bottom of the cagefo-r-the working valve 65- In the^ bottom of the cage 64 is alseat' 66 for t-he valve, lwhich latter closes downwardly. The cage is attached to'the. sucker rod 13 by a connector 67 which houses a Spring 68 bearing on a buii'er or yielding abutment 69 mounted in lthe tubular hub portion 70 of--the cage 64 so that as the working valve opens, the bu'er will be en- -gaged and the spring compressed. The foot valve rod 5 0 extends upwardly through the tubularl member 63 of the plungerand is so arranged as to positively unseat the working valvev65 in case the same should become sanded or stuck to its seat. By means of' the member 63, cage 64, land connector '67, the plunger is rigidly connected with the sucker rod so that the plunger will be positively rotated by the latter for the vpurpose of maintaining the foot valve and its seat in properly ground condition. The plunger l) is so .designed as to alwaysmaintain a snug working fit with the lining of the barrel,

and, for this purpose, the plunger body is composed of two telescoping tubular parts or sleeves 71 and 72, which arel split longitudinally throughout the major portion of their length from the upper ends. As shown in Fig. 8,-the slits 73 of the outer member 71 are staggered Vwith respect to the slits 74 of the. inner member 72. The inner member.

' is of less external diameter than the internal diameter of the outer memberl so as to accommodate betweenA them an imperforate tube 75 of' rubber orothei` suitable material so as to prevent entrance of sand between the members. The weight of the column of :liquid above the plunger actsjon vthe split walls of the'latter and force them outwardly into engagement. with the llning of the barrel so that leakage past the plunger will be eiiectively prevented. The upper; end of the inner member 72 is of increased thickness as shown at 76 to extend over the upper splitA end of' the' outer member and the packing 75 to providea substantial wearing surface.

The upper end of the mner member may be beveled at 77 to *form `a sharp edge to effectively scrape the S'an'dffrom the lining of the barrel -and thus minimize the cutting action which would result if the sand enters between the plunger and lining. The inner and outer members of the plunger body are valve is held on its seat. lworking valve'closes on the initial part of the 'upstroke to raise the column of oil in4 secured together by rivets 78 located at the lower ends ofthe members, as shown injFigs. 5 and 7, whereby the plungerI body is a unitary structure free to expand throughout substantiallyits entire length except at its lower end to afford a good working fit with the barrel.

Y In the operation of the pump, the plunger I is continuously reciprocated and rotated while the foot valve is continuously rotated therewith but does-not participate in the reciprocatory movement of the plunger. During the downward movement of the plunger,the working valve opens to permit the oil under the same to pass through the plunger, and during this .Inoveme'nt,the foot As soon as' the the tube, the foot valve will open, by the combined action of the suction from the plunger and the expansion of the spring 54, to permit oil to enter through the foot valve to the space between the latter and plunger.

In Fig. 9,' a construction similar to that of Fig. 5 is shown except as to the design ofthe plunger body. The working valve is of the downwardly-closing ball type and the plunger is composed of a single tubular .member7 9, and on the standing valve rod is a-spider-shaped guide 80. Thisv guide 8O cannot leave the plunger when the latter is pulled out of the well, so that the foot valve l must be removed with the plunger.

In Fig. 12, the working valve is arranged -at the bottom of the plunger and closes upwardly. The plunger 81 is made after the construction shown in Fig. 5,'as regards the expansibility `of the plunger. under the weight of the column of oil in the pump` tubing so as to snugly fit the lining of the barrel. Inthe lower end of the plunger is threaded a seat ring 82 with which engages the working valve 83 thatis carried by a tubular rod 84 that extends longitudinally through the plunger and connects with the lower part of-a hollow sucker rod 85. The

upper end of the plunger body is internally enlarged, as shown at 86, to receive a guide frame 87 screwed to the upper end of the rod 84. On the upstroke of the rod 84, the plunger is moved therewith as soon as the valve 83 engages its" seat. It will thus-be seen that the plunger is idle during the first partof each stroke of the 'suckei rod for the purpose of positively opening and closing the working valve. Theworking valve 83 is threaded on the rod 84 and is retained l thereon by a jam nut 88- which has a noncircular opening 89 through which the standing valve rod 50 moves.' On the upper end of the -rod 50 is an enlargement in the form of a head 90 lodged in the tubular sucker rod 85, which head preventsthe4 rod 50 from pulling out of the jam nut or head 40 v Figs. 15 .to 17, in which vthe Yplunger 92 `88when the plunger is remove'd from ther pump, thus insurlng the removal of the working valve at the same time. The structure shown in'Fig. 12 admitsthe use of a large standingvalve rod, which is important in deep well pumps. When the parts are in the position shown in'Fig. 12, the oil is passing upwardly. through the plunger as the working valve is open. As the stroke of the sucker rod reverses, the valve 83 is brought into engagement with its seat 82 during the first part of the movement, while, the working valve remains seated, and during the continued upward movement of the sucker rod, the plunger and working valve move together so 'as to raise the column of oil. above the plunger and at the same time cause the standingfor foot valve-to open to admit a fresh charge of -oil'to the barrel; The standing valve is not positively' connected with the plunger or sucker rod, and

after rit reaches the limit of lits opening" movement, the plunger can continue to move upwardly to the limit of its stroke by the sliding connection between f the standing valve "rod 50 andthe rod 84.' After the plunger reaches the end of its upward movevment, the suckerrod is'reversed to produce the downstroke. The plunger remains stationary during therst part of this movement until lthe ring 87 strikes the'shculder formed. by the internally enlarged portion 86, when the plungermoves with the sucker rod, the valve 83 being opened in the meanarsk 'into' the sucker rod and threaded end is a cage-li time. The ',foot valve is self-.seating soA that the column of oil above the lunger cannot flow downwardly out of the' arrellthrough the foot valve.'

, vAnother' form of pump having an .upwardly-closing'working valve' is shown 1n carries at its upper end a valve seat-ring 93 whichscrews into the plunger, the lower end of the ring being formed with a seat 94110 be engaged by theworking valve 95..

The working valve) 95 is screwed on a mein# ber 96 that extends g upwardly out .of the plunger and connects with'the suckerrod, a

portion ofwhich is'shown at 97. The memer 96 hasits upper end-threaded to screw rried jby this kcg depressor 98 which is clamped'between the part 97 ofthe sucker rod and the flange 99 on the member 96. This depressor'isof less-diameter'than the'plunger and is adapted to -enter the ring 93 which is counterbored-at 100 for that pur-l pose. The base of the depressor engages the internal shoulder lOl-"of'the ringr93 so vthat after vthe workingvalve is moved to' open positi'omthe depressor will engage 'the 'plunger to move the same downwardly as the sucker rod descends. This depressor serves 'to center the suckerrod with res ect to the plunger. Arranged/ within the p unger is a tubular link 102 which is internally l 'threaded at its upper end tov screw on the lower end of the member 96 and tol/serve at the same time .as a j am' nut for holding the val-ve 95 -o the said member. The tubularV link 102 has longitudinal slots 103 at oppor site sides in which reciprocate the wings 1041I fl,of 'the head 105 on the standing Vvalve rod 50. The link 102 andl head 104 constitute a slip' jointgbetween the sucker rod and foot valve, whereby the latter is free to reve, v

during its opening and closing, independently of the vsucker `rod, while the latter,- -nevertheless,- continuously rotates the foot valve. .When the Vplunger 'moves' downwardly, as' shown in Fig.' 15, the working valve 95` will be opened so that the oil can rise through the plunger, the foot valve beparts that form the slip joint in` Fig. 15 are reversed; that is to say, the tubular link 106V isy rigidly'secured ,to the movable part of the `foot valve, while the rod 107 is connected with the working valve, the winged head 108 being located at the lower end ofthe rod 107. Insteadvof using the depressor 98 of Fig. .15, the valve 109 in the modifiedl form, Fie. 18, constitutes the depressor. A fixed spider or guide 110 is arranged in the plunger '111, at a oint slightly lbelow the valve `seat 112 witli the valve between/,the seat and guide. Whenthe valve is moved open, 'the/.bottom thereof strikes the vguide wardly with the valve. :In other respects, the operation of the punp is similar to the pump shown in Fig. 15.

The -joints a between the sections of the sucker rd are constructed asfshown in Figs."

20 and 21. The end of the sucker rod section 113 is threaded and enters a threaded 110156` that the plunger will move downsocket 114 in a`coupling 115, the other end 116. of which` is reduced and externally threaded. To the'end 116 there is applied a Y straight internally tthreaded coupling sleeve 117 receiving at the other end a long threaded'v ste'm118 ony another coupling 119 of4 vgreaterxdianeter than the stem `118.

There is also a pliedfto the stem 118 an in ternally threa edcollar 120. The end of the coupling 119.rem`ote` from the stem 11'8 is formed @with al1-axial threaded socket 121 re'- l ceiving the" sucker.'rod 13. v The sleeve '117 and the sockets of the couplings 115 and 119 are each provided` with anopening 122 to permit the sand and other foreign mat-ter to pass out as the stems screw thereinto. The ends of the coupling are externally beveled at 123 so as to prevent the coupling from catching on the tubing" in pulling up or letting down the sucker rod. The couplings 115 and 119 are square in cross section where necessary for the'application of a wrench thereto. In using a coupling of this character, the sections of the sucker rod can be readily connected or disconnected, and by using the same size stems on different sized rods, it is necessary to, have only one set of couplings. The parts of the joints a are interchangeable, so that such a joint becomes advantageous in de'e`p wells, such as oil wells, since worn out parts may be readily renewed 'by new fittings, and expense is thereby saved.

The rotation ofthe sucker rod is highly advantageous and of importance in keeping -the valves ground to perfect fit, wherebv leakage is prevented. Also, the threaded connections will not unscrew, since the rotation of the rod tends`to maintain the threaded connections tightly screwed together. Another advantage is that the couplings will not wear holes in the tubi'ng,

since if they touched the tubing at all`V it is at successively different points about the in' ner walls of the tubing, and the wear is, therefore, not localized and the tendency of the coupling to wear flat is to a great extent prevented.

From the foregoing description, taken in connection -with the accompanying drawings, the advantages of the construction and of themethod of operation will be readily apparent to those skilled in the art `to which the invention appertains, and whileI have described the principle of operation'of the invention, together with the p apparatus which I now consider to be the best embodlment thereof,I desire to have it understood that the apparatus shown is merely illustrative, and that such changes.'y may be made when desired as are within the scope of the claims appended hereto. y

The structure of the pistonv orplunger shown and described herein is not claimed, being, in connection with other features, shown and claimed in my application No. 656,606, for expansive plunger, filed October 25, .1911.

Having thus described the invent-ion, what I claim as new, and desire to secure by Let ters Patent, is :--V

1. In a pump of the class described, the combination of a plunger,fmeans for reciprocating the same, a working'valve, a foot valve, and means for continuously rotating the reciprocatory foot valve by the said plunger-actuating,means. i

2. In a pump, the combination of a plunger, a reciprocatory actuating rod connected valve and rod permitting relative independent movement between them while t-he rod rotates the foot valve. I

4. In a pump, the combination of a hollow plunger, a rod connected with the plunger for reciprocating the same, means for simultaneously reciprocating and rotating the rod, a foot valve, 'a member connected with and rising from the foot valve, and vmeans for operatively connecting 'the member with the rod for permitting the valve to automatically open and close independently kof the rod and to be rotated by the latter.

5. In a pump, the combination of a plunger, a rotary and, reciprocatoryrod operatively connected with the plunger for raising and lowering the same, a working valve automatically opened and closed, a foot valve, a member rigidly secured to the foot valve to move therewith, and a member to which the plunger is connected for rotating th foot valve by the rotation of the said ro 6. In a pump, the combination of a plunger, an operating rod therefor, means for reciprocating and rotating the rod, a foot valve, and a slip joint between the foot valve and rod for permitting the valve toopen and close independently of the movement of the rod and to rotate the foot valve by the said rod.

t 7. In a ump, the combination of a plunger, a wor ring valve therefor? a sucker rod,

means for operatively connecting the working valve to the sucker rod, a lost motion connection between the sucker rod and plunger, means forY rotating the sucker rod, a

foot valve, and means for operatively connecting the foot valve with the sucker rod for rotating the valve. v

8. In a pump, the combination of a hollow plunger, an upwardly closing working valve therefor,- an operating -rod for the plunger operatively connected with the working valve, a lost motion connection between the rod and plunger whereby the latter is idle at the beginning of eachstroke of the rod to open and-close the working valve, a downwardly-closing foot valve` and means for wardly through the plunger, a foot valve, a sliding connection between the foot valve and memberforrotating the valve, and a working valve connected with the said member.

10. Ina pump, the combination of-a plunger, a rotary and longitudinally movable operating rod, a foot valve, members disposed in the plunger connected with the foot valve and operating rod respectively and connected with each other for simultaneous rotary movement and independent longitudinal movement, and a working va'lve for the plunger.

11. `In a pump, the combination of a plunger, an operating rod therefor mounted for rotary andvreciprocatory movement, a lost motion connectlon between the vrod and plunger, a foot valve, av member 'connected with the foot-valve andextending into the plunger,'a member connected with the` rod and extending into the plunger, a connection between the two members' for transmitting rotary motion from thel rod to the foot valve and permitting the valve to open and close independently of the movement of the rod, and a working valve for the plunger.4 I

12. In a pump, the combination of a hollow plunger open at its ends, a rotary sucker rod, a member connected with the rod and extending through the plunger, a working valve carried by the member, a foot' valve 'disposed under the plunger, a member connected with the foot valve and extending upwardly into the plunger, a spring acting on the foot valve tending to open the same, and a connection between the members whereby both rotate together while the first member can vreciprocate without reciprocating thev foot valve.' t

13. In a pump, the combination of a hollow' plunger open at its ends, a sucker rod, a member rigidly secured to the sucker rod, a depressor connected with the member and arranged to engage the plunger for moving the same downwardly in the de scending stroke of the rod, a valve connected with the member and arranged to seat by the u ward movement of the rod, a foot valve a apted to open and close automatically, and a connection between the foot valve and member for continuously'rotating the valve.

14. In a pump, the combination 'of a plunger, a rotary and reciprocatory actuating rod therefor, a member connected with the rod and extending downwardl through the plunger, a working valve rigi ly secured to the member and arranged to close by an u ward movement, means cope'rating 'wi h the valve to rovide lost motion between the operating rod and plunger lduring the initial part of each stroke f the rod,`a footvalve, andk means for operatively connecting the foot valve withythe said member for ro tating the valve. l

15. In a pump, the combination of a plunger, a seat at one end thereof, an actuating rod mounted to simultaneously reciprocate` vmeans for connecting the plunger with the rod to permit the latter to move independently of the plunger during the initial part of its stroke to open and close the working valve, a foot valve, a spring-acting on the foot valve to raise the same, amember secured at its lower end to the foot valve and arranged in telescoping relation to the working valve carrying member, and a connection permitting relative ,longitudinal movement between the members while the rst member rotates the second.

16. In a pump, the combination of a plunger openat both ends, a rotary and longitudinally movable actuating rod, a member connected with the rod and extending into the plunger, a working valve on the lower end of the member closing by an upward movement, a device connected with the member at a point below the valve, a foot valve, and a connection between the lfoot valve and device for permitting the foot valve to open and close simultaneously while the device rotates the valve.

17. In a pump, thecombination of a plunger open at both ends, a rotary and reciprocatory actuating rod, a member 'connected with the rod and extending lon itudinally of the plunger, a depressor on t e member arranged to engage the plunger to move the same downwardly with the rod, a valve on the member below the depressor to close the plunger by an upward movement, V4a device secured to the member below the plunger, a

foot valve, a member rigidly secured to the foot' valve and connected with the device for relative sliding movement and for rotating the foot valve by the device, sald depressor Vand working valve constituting a lost mothe plunger and.

tion connection between member.

.18. Inl a pump, the combination of a plunger, a. rotary and reciprocatory actuating rod, a valve seat on theplunger, a mem` ber connected with the rod and extending through the valve seat, a valve on the member disposed below t-he seat and closing upwardly against the seat, a 'depressor secured tothe member and arranged to en age the. plun er to move the latter downwar y after the valve opens, and a foot valve operatively connected with the member to be rotated thereby.

19. In a pump, the combination of a plunger, a rotary and reciprocatory actuating rod, a valve seat on the lun er, a member connected with the ro an extending ythrou h the valve seat, a valve on the member disposed below the seat and closing upwardly against the seat, a depressor secured to the member and arranged to engage the plunger to move the latter downwardly after the valve opens, a foot valve, a member connected with the foot valve and extending upwardly into the plungerin telescoping' relation to the first member, and-means.connecting .the members for independent longitudinal and simultaneous rotary movement.

20. In a pump, the combination of a plunger, a rotary and reciprocatory actua-ting rod, a valve seat on the plunger, a member connecte'd with the rod and extending' second member while continuously rotatingthe latter. l

21. In a pump, the combination with a barrel, of a foot valve mounted therein, said valve comprising a valve body, a seat carried by the body, af rotatable valve member "engaging the seat, and a centering guide disposed Within the body and connected with the valve member, and lneansvfor rotating said valve member irrespective of uid passing through the foot valve.

22. In a pump, the combination with a barrel, of a foot valve mounted therein, said. valve comprising a valve body, a.se'at carried by the body, a rotatable valve member engaging the seat, a centering guide -disposed within the body and connected with the valve, and a spring housed in the `body and pressing on the guide to open the valve,

and means 'for rotating said valve member irrespective of fluid passing through the foot valve. i

23. In a pump, the combination of aibarrel, with a foot valve therein, lsaid foot valve comprising a hollow body, a` seat ring secured to the upper end of the body and forming an internal shoulder, a gnidein the body, a spring urging the guide toward the shoulder, a rotatable valve member arranged to engage the seat and rigidly connected with the guide, whereby' t-he spring is compressed .when the valve member is seated, and means for rot-ating said valve member irrespective of iuid passing through the foot valve. l

24. In a pump, the combination of a barrel, with a foot valve therein, said `foot valve comprising a body open at both ends, internal shoulders at the upper and lower ends of the body, a spring resting on the lower shoulder', a guide movable into engagement with the upper shoulder by the spring, a

seat above the upper shoulder, a rotatable valve member arranged to engage the seat, means for rotating said valve member irrespective of fluid passing through the foot valve, and a connection between the valve member and guide. n

25."'In a pump, the combination of abarrel, with a foot valve therein, said foot valve comprising a tubular body, va seat on the upper end ofthe body, a rod having a threaded end extending intorthe body, a valve member threaded on the rod to engage the seat, a guide mounted on the rod and disposed 'within the body, a sleeve interposed between the guide andvalve member, i

a spring arranged within the body and pressing on the guidehfor operating through thev same and rod to open the valve member,

and means for rotatingsaid 'valve member irrespective of fluid passing through the foot valve.

In testimony, that I claim the foregoing as my own, I have hereto atlixed my signature -1n the presence of two witnesses.

.CLARENCE L. PARKER. Witnesses N. D. EUs'ris, T. W. EUs'rIs. 

